这是一个封装得比较完整的串口类接口，支持同步、异步操作，使用简单高效，具有工业强度，我在BC, BCB, VC, BCBX, GCC下编译通过。-This a more comprehensive package in the category of serial interface, supports synchronous and asynchronous operation, the use of simple, effective and industrial strength, I BC, BCB, VC, BCBX, through the GCC compiler.